Rika is a little brat I think.She thinks that digimon are just for fighting and gets mad at Renamon whenever she loses. The color of her D-power is blue and She is the digimon card champion.Her rookie is Renamon,champion Kyubimon,Ultimate Taomon,Mega Sakuyamon.

Rika Nonaka

Reremon

Viximon

Renamon

Kyubimon

Taomon

Sakuyamon